Thousands of birds dropping from the sky of avian cholera in Oregon

More than 10,000 migrating birds died of avian cholera in southern Oregon and northern California this year because of low water levels in the wetlands at a popular bird rest area, according to media reports.

A cut-off water supply may be to blame, the Oregonian reported. The U.S. Bureau of Reclamation stopped water to a popular refuge for birds, the Klamath Basin National Wildlife Refuge Complex, because of light snowfall last year.